Add right-hander Jesse Chavez to the Athletics’ long list of injured starting pitchers.

Oakland skipper Bob Melvin informed beat writer Jane Lee of MLB.com on Tuesday that Chavez — who was scheduled to start Wednesday night against the White Sox — has been shut down for the remainder of the season after an MRI showed a non-displaced fracture in his rib cage.

Chavez told reporters on Tuesday afternoon that he’s been experiencing discomfort around his ribs for a while, which might help explain his recent struggles.

The 32-year-old will finish the 2015 season with a 4.18 ERA, 1.35 WHIP, and 136/48 K/BB ratio in 157 innings. He’ll be arbitration-eligible this winter.

Drew Hutchison boasts a 13-4 record and 2.91 home ERA this season for the American League East-leading Blue Jays, but the 25-year-old right-hander has been dreadful on the road and will no longer be trusted in a starting role.

Alex Rodriguez is in the Yankees’ starting lineup on Tuesday night against the Rays, but here’s something to keep an eye on going forward …

George A. King III of the New York Post heard from a club official that A-Rod underwent an MRI on Tuesday in Tampa after complaining of discomfort in his left knee and was diagnosed with a bone bruise. It’s obviously not a significant issue right now, but there may be some days off ahead for the veteran designated hitter.